August 2021 0 11 Report
4. Расставьте коэффициенты в уравнении: …Cа(ОН)2 + …Н3РО4 = …Ca3(РО4)2 + …Н2О.

а) 3, 2, 2, 3; б) 2, 3, 1, 6;

в) 3, 2, 1, 6; г) 3, 2, 0, 6.
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